This is a new Stevie Nicks Follow the Sun Tee Shirt. It is a spandex cotton blend. It is very soft and comfortable. It does run small see size chart. I recommend sizing up unless you want it fitted. Medium 17 inches pit to pit Large 18 inches pit to pit 97% cotton 3% spandex Similar to Spell & the Gypsy Collective T-shirt’s with that boho music festival vibe SHIPS SAME OR NEXT DAY PROFESSIONAL SELLER OFFERS WELCOME BUNDLE AND SAVE💕💕